Meanwhile, Jo Silver, 50, from Wicklewood, said she wanted to enter the marathon to challenge herself on a landmark birthday. She will be raising money for the rare chromosome disorder support charity, Unique.

“I am really excited about the big day, everyone says the atmosphere and the crowd is amazing,” she said.

To sponsor, search Jo Silver at www.uk.virginmoneygiving.com/giving/

Visually impaired triathlete

Visually impaired triathlete Iain Dawson is running the marathon to raise money for the national disability charity Sense.

The 41-year-old, from New Buckenham, suffers from a genetic eye condition called X-Linked Juvenile Retinoschisis.

He is aiming to raise £1,500 for Sense and is hoping to complete the course in under four hours.

Visit www.uk.virginmoneygiving.com/IainDawson to sponsor him.

Also taking part on Sunday is Rachel Hirst, who lives near Loddon.

It will be the 53-year-old’s second marathon, after she entered the Edinburgh Marathon in May 2017.

The Bungay Black Dog Running Club member is raising money for the Norfolk and Norwich Association for The Blind, which her husband Tim is a trustee of.